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Earthquake alarm

A technology for alarms and earthquakes, applied to alarms, instruments, etc., can solve the problems of complex structures, easy false triggers, and complex circuits of earthquake alarms, and achieve reliable performance, less false triggers, and simple and practical circuit structures.

Inactive Publication Date: 2009-06-24
李赞荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, it is difficult to see earthquake alarms for sale in the market. The reason is that the current design of earthquake alarms has complex structures or circuits, or is easy to be triggered by mistake, or easily damaged.

Method used

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Embodiment Construction

[0010] figure 1 It is the schematic diagram of the circuit of the present invention. The battery BA is composed of two No. 5 batteries, which provide a voltage of 3 volts to the circuit. The alarm music integrated circuit IC preferably adopts the voice with "Earthquake! Run!" If there is no, three can be used. Sound (ambulance sound, police car sound, fire engine sound) alarm music block instead, SP adopts 0.25W speaker, enough to be heard indoors, mercury foam MD can be processed separately according to needs, or the common one on the market can be used, V2, V3 adopts composite connection method, which can make the control sensitive. The installation requirement of this device is that it should be installed at a certain angle, as long as the mercury bulb is not connected, the device can be hung on the wall. When an earthquake causes the wall to vibrate, the mercury in the mercury bubble will shake, and the The short circuit of the electrode makes the triode V1 turn on, and c...

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PUM

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Abstract

The invention relates to an earthquake alarm, which comprises a power supply circuit, a trigger and an alarm circuit; two 1.5 volt batteries are utilized to supply power, a mercury bead is used as the trigger, and a musical integrated circuit is used for making an alarm. The alarm has the advantages of simple and practical circuit structure, reliable performance, compact size, less false trigger, low manufacture cost, long service life, energy conservation and less power consumption.

Description

Technical field: [0001] The invention relates to an earthquake alarm, which is a small electrical appliance suitable for placing in homes, offices, dormitories, classrooms, etc., and is used for alarming during earthquakes, prompting people to leave dangerous places early to ensure personal safety. Background technique: [0002] It is difficult to see that there are earthquake alarms for sale in the market at present, because the earthquake alarms designed now have complex structures or complex circuits, or are easily mistriggered or easily damaged. Invention content: [0003] The invention provides an earthquake alarm, which can be hung on the wall or placed on the desktop or embedded in some infrequently moving utensils. It has simple structure, reliable performance, small size, less false triggers, low cost and long service life. long. [0004] The technical scheme that the present invention solves its technical problem is: a kind of earthquake alarm, is made up of pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/10
Inventor 李赞荣
Owner 李赞荣